Rotating lock reset system and method

ABSTRACT

A system and method for resetting a locking mechanism of a medicament delivery or training device is provided herein. The system and method include a central shaft comprising a slotted ring, a pronged ring, a spring, a spring clamp, an actuator button, and a lock ring. Following the firing of the medicament device, wherein the actuation member has been activated and the lock ring in the unlocked position, the system and method can be initiated to reset the locking mechanism such that the components of the system and the lock ring are reset to the locked position before the actuation member can be actuated for a subsequent injection or training.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to and incorporates by reference thecontents of Provisional Application No. 61/788,033 filed on Mar. 15,2013.

BACKGROUND

Auto-injection or “pen” devices have recently become increasinglypopular for single dose or multi dose, at home self-administration.These auto-injection devices are primarily designed to accomplish twobasic objectives: convenience and automation of drug delivery in anoutpatient setting. These are typically mechanically spring-loadeddevices that advance a plunger or rubber stopper to transfer medicationvia hollow-bore needle to a patient's tissues. Auto-injection deviceslack the ability to regulate whether the medication is actuallydelivered to the patient or whether it is delivered to a correctlocation. Most auto-injection devices fail to integrate advanced digitalcapabilities.

Injectable medications are required for a number of varying illnessesand diseases. A number of injectable medications require self-injectionby a patient. Self-injection of a medicament using a device having aneedle carries with it a certain stigma. Oftentimes patients are wearyof injecting themselves for fear or anxiety related to failing toreceive a complete dose of the medication, pain associated withinjecting oneself with the needle, accidentally sticking oneself withthe needle, and difficulties in adequately grasping the dosing mechanismto inject oneself, among other concerns. Auto-injection devices areroutinely used to provide a means for self-injecting certainmedications. The size and operation of these auto-injection devices canoften be daunting to a patient, whether they are injecting themselvesfor the first or they have injected themselves before. These fears andanxieties associated with the currently available self-injectiondevices, particularly the auto-injection devices, may result in theadministration of an incomplete dose of a medicament, failure toadminister any portion of the dose of a medicament, or accidentallysticking oneself with the needle of the device, which in some instancescould lead to unwanted transmission of diseases if the needle iscontaminated.

In some instances, after an auto-injection is complete, the contaminatedneedle is retracted within the auto-injection device or covered over bya needle guard or sheath and the entire auto-injection device isdisposed of. Therefore, most auto-injectors currently available aresingle use auto-injectors. These single use auto-injectors are costlyand economically wasteful. Alternatively, there are injection deviceswhich require a user to re-cap a needle after the injection is completesuch that the disposable needle can be removed and discarded. Theseinjection devices carry with them the risk of unwanted sticking ofoneself during re-capping of the needle.

An additional concern exists with regard to injection devices, and inparticular with regard to auto-injectors, where users with little or nomedical knowledge or experience are injecting themselves or injectingothers using these devices. Performing a medical treatment or test ononeself or others carries with it certain risks and often creates alevel of anxiety for the user performing the treatment or test. It hasproven beneficial in the medical field to practice various medicaltechniques including drug delivery, specifically where it relates toinjections and other invasive drug delivery means prior to deliveringthe medications to a patient in need, and particularly in the case ofself-administration of medicaments. Training devices are helpful inreducing anxiety associated with self administering medical treatment,as well as increasing efficiency and accuracy in providing the treatmentto patients. Medical devices can be intimidating to use; the fearassociated with giving oneself an injection, for example, can betraumatic. This fear is increased in persons with little or noexperience in self-administration of medications. Consequently, devicesto assist in training individuals to inject themselves or otherwiseself-administer medication are beneficial in decreasing or preventingthe anxiety associated with medicament delivery.

Safe use and re-use of these devices requires resetting of the mechanismor housing that provides the movement of the device to initiate aninjection and the portion of the device that protects users fromsticking themselves.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A provides a side view of an embodiment a locking reset systemincluding the resetting member.

FIG. 1B provides an exploded view of the components of the embodiment ofthe locking mechanism reset system shown in FIG. 1A.

FIG. 2 provides a side view of the system showing the first end of thecentral shaft and various components of the system associated with thecentral shaft.

FIG. 3 provides a side view of the system showing the first end of thecentral shaft and various components of the system associated with thecentral shaft with the lock ring, spring, and pronged ring removed.

FIG. 4 provides a side view of the system showing the first end of thecentral shaft and various components of the system associated with thecentral shaft with the lock ring and spring removed and the pronged ringdetached from the slotted ring.

FIG. 5 provides a side view of the system showing the first end of thecentral shaft and various components of the system associated with thecentral shaft with the lock ring removed.

FIG. 6 provides a perspective view of the pronged ring.

FIG. 7 provides a cross sectional view of a portion of the system,illustrating a lock ring in a locked position.

FIG. 8 provides a cross sectional view of a portion of the system,illustrating the lock ring in an unlocked position.

FIG. 9 provides a partial side view of a first end of the central shaftof the system.

FIG. 10 provides a side view of a first end of the central shaft of thesystem.

FIG. 11A provides a side view of an embodiment of the system at the endof the reset.

FIG. 11B provides a close up of a side view of a portion of anembodiment of the system showing the interaction between the first hookand the pronged ring at the end of the reset.

DETAILED DESCRIPTION

For the purposes of promoting an understanding of the principles andoperation of the invention, reference will now be made to theembodiments illustrated in the drawings and specific language will beused to describe the same. It will nevertheless be understood that nolimitation of the scope of the invention is thereby intended, suchalterations and further modifications in the illustrated device, andsuch further applications of the principles of the invention asillustrated therein being contemplated as would normally occur to thoseskilled in the art to which the invention pertains.

The inventors have discovered several areas in which the prior art couldbe improved. Prior art medicament delivery and training devices havebeen found by the inventors to lack certain safety and convenientfeatures. While some medicament devices may include locking mechanisms,the inventors have identified a need for a resetting mechanism or systemfor a locking mechanism for a medicament delivery or training device.Locking mechanisms for these devices provide various safety benefits,such as, preventing a needle from ejecting from the injection housingbefore or after an injection so as to prevent unwanted sticks of a user.The inventors have discovered a novel resetting system and method forresetting a medicament delivery or training device locking mechanismfrom an unlocked position back to a locked position, in one embodiment,for subsequent uses of the device. Therefore, for safety purposes,injection devices may have a lock, where the user has to unlock thedevice prior to use. Resetting the lock on a re-usable trainer from anunlocked to a locked position is especially challenging. This inventiondiscloses a method and system to reset a rotating lock from an unlockedto a locked position.

In some embodiments, a user must unlock a locking mechanism prior toactuating the medicament device. In one embodiment, once a user hasunlocked the locking mechanism, the actuation member is in anactivatable state (i.e., in a position to be activated—unlocked) and canbe depressed, in an embodiment, to activate the delivery or trainingdevice. Following activation of the delivery or training device, theactuation member is no longer in an activatable or unlocked state, andthe locking mechanism must be reset to a locked position before thedevice can be used again. Therefore, in one embodiment, a system forresetting a medicament device locking mechanism from an unlockedposition to a locked position is provided. The system includes amedicament device housing having a central shaft, the central shafthaving at least a first hook at a first end thereof. A central shaftring is slidably engaged with the central shaft and movable along alongitudinal axis of the central shaft, and a slotted ring slidablyengaged with the central shaft and associated with the central shaftring, the slotted ring having at least one guiding channel along itsinner surface, the at least one guiding channel formed between at leasttwo raised portions on an inner surface of the slotted ring, in anembodiment. In a further embodiment, the slotted ring has two or moreguiding channels along its inner surface. In still a further embodiment,the two or more guiding channels are disposed at 45 degree increments onthe inner surface of the slotted ring.

The system further includes a pronged ring slidably engaged with thecentral shaft and movable along the longitudinal axis of the centralshaft, the pronged ring having at least one prong, the at least oneprong being slidably engaged within a guiding channel of the slottedring, wherein the pronged ring has one or more openings, one or moreridge portions adjacent to the one or more openings, and one or morenotches around its circumference, in an embodiment. The system furtherincludes a spring associated with the pronged ring at a first end of thespring, the spring associated with a spring clamp at a second end of thespring, wherein the spring is arranged to exert a torque upon thepronged ring, and a lock ring surrounding at least a portion of thefirst end of the housing, the lock ring having one or more spinesprojecting inwardly, the one or more spines configured to interface withthe one or more notches of the pronged ring, wherein the lock ring has alocked position and an unlocked position, in an embodiment. Prior toreset of the resetting system and prior to actuation of the actuationmember for use of the medicament device, the lock ring is rotatable fromthe lock position to the unlock position such that the actuation membercan be activated. Once the actuation member has been actuated, it cannotbe actuated again until the system is reset from the unlocked positionto the locked position, in an embodiment.

Upon actuation of the resetting system, the central shaft ring is movedin a longitudinal direction toward the first end of the central shaft,in an embodiment, forcing the slotted ring toward the first end of thecentral shaft such that at least one of the raised portions of theslotted ring depresses the first hook of the central shaft, and thepronged ring is disengaged from the slotted ring such that the firsthook engages the ridge portion of the pronged ring. A torsional forcefrom the spring rotates the pronged ring axially relative to the centralshaft, rotating the lock ring from the unlocked position to the lockedposition and rotating the pronged ring such that at least the first hookaligns with an opening of the pronged ring, in an embodiment. Acompression force from the spring forces the at least one prong of thepronged ring to re-engage with the guide channel of the slotted ring tocomplete the reset of the system from the unlocked position to thelocked position, in an embodiment of the system.

In a further embodiment, the system is provided wherein an actuationmember is associated with the first end of the central shaft, andconfigured to activate the medicament device upon actuation, wherein theactuation member is actuated by pressing down on the actuation member,in one particular embodiment, such that it moves in a longitudinaldirection relative to the central shaft toward the second end of thedevice. Other types of actuation members and modes of activation ofactuation members are contemplated herein, including but not limited toswitches, toggles, digitally selected buttons, manual buttons, touchsensors and the like.

In still a further embodiment, the system is provided wherein when thelock ring is in the locked position, the actuation member cannot beactivated. In one particular embodiment, the actuation member cannot bemoved in a longitudinal direction relative to the central shaft towardthe second end of the device when the lock ring is in the lockedposition.

In yet a further embodiment, the system is provided wherein when thelock ring is in the unlocked position prior to actuation of the device,the actuation member can be activated. In one particular embodiment,when the lock ring is in the unlocked position before the device hasbeen activated, the actuation member is movable in a longitudinaldirection relative to the central shaft toward the second end of thedevice, for example.

In one embodiment, the medicament device is a training device for anauto-injector. However in other embodiments, the medicament device is anauto-injector. In further embodiments, the medicament device may haveboth training and injection capabilities, and thus may be a hybriddevice of a trainer and an auto-injector.

The system is further provided, in an embodiment, wherein at least asecond hook is disposed on the central shaft. The second hook interactswith the spring clamp to prevent the spring clamp from moving along thelongitudinal axis of the central shaft, toward the first end of thecentral shaft for example, and/or prevent the spring clamp from rotatingrelative to the central shaft.

In still a further embodiment, the actuation member is reset to apre-actuated position upon resetting of the locking mechanism. Thepre-actuated position allows the actuation member to be re-activated.Following a use of a device, the actuation member is inactive until thesystem is re-set from an unlocked to a locked position.

In a further embodiment, a resetting member is provided to interact withthe device and initiate the resetting of the locking mechanism, forexample. The resetting member may include a base and an elongatedportion, wherein the elongated portion is configured to associate with asecond end of the medicament device to initiate movement of the centralshaft ring to actuate the system and initiate the resetting of thedevice, in an embodiment.

In a further embodiment, a method is provided for resetting a medicamentdevice locking mechanism from an unlocked position to a locked position.The method includes a resetting system. The system includes a medicamentdevice housing having a central shaft, wherein a first hook is disposedat a first end of the shaft. A central shaft ring is slidably engagedwith the central shaft and movable along a longitudinal axis of thecentral shaft, and a slotted ring is slidably engaged with the centralshaft and is associated with the central shaft ring. The slotted ringhas at least one guiding channel along its inner surface, and the atleast one guiding channel is formed between at least two raised portionson an inner surface of the slotted ring, (d) a pronged ring slidablyengaged with the central shaft and movable along the longitudinal axisof the central shaft, the pronged ring having at least one prong, the atleast one prong is slidably engaged within a guiding channel of theslotted ring, wherein the pronged ring has one or more openings, one ormore ridge portions adjacent to the one or more openings, and one ormore notches around its outer circumference. A spring is associated withthe pronged ring at a first end of the spring, the spring beingassociated with a spring clamp at a second end of the spring, whereinthe spring is arranged to exert a torque upon the pronged ring. Thespring clamp keeps the second end of the spring in place, in oneembodiment. A lock ring surrounds at least a portion of the first end ofthe housing, in one embodiment, the lock ring having one or more spinesprojecting inwardly, the one or more spines configured to interface withthe one or more notches of the pronged ring. The lock ring includes alocked position and an unlocked position.

In some embodiments the words LOCKED and UNLOCKED or symbols or colorsto indicate the same may appear on an outer portion of the lock ring orof the device to indicate to a user whether the system is in a locked orunlocked position. The system further includes an actuation memberconfigured to activate the medicament device upon actuation, whereinwhen the actuation member is actuated, in an embodiment, it is moved ina longitudinal direction relative to the central shaft toward the secondend of the device, for example. As already discussed herein, theactuation member may be actuated in any number of ways, and may beembodied as, but is not limited to, a toggle, a button, a switch, asensor, a digital button or any other type of actuation member known tothose of skill in the art.

The method further includes rotating the lock ring from the lockedposition to the unlocked position to apply a torsional force to load thespring prior to use of the medicament device. The method furtherincludes wherein the resetting member releases the pronged ring from theslotted ring and unloads the torsional force of the spring, rotating thepronged ring about the central shaft. In yet a further embodiment,movement of the pronged ring toward the first end of the central shaftloads the compression force of the spring.

In still a further embodiment of the method, wherein after the prongedring is rotated about the central shaft such that the first hook of thecentral shaft is disposed in the pronged ring opening, the compressionforce of the spring causes the pronged ring to move toward the slottedring to complete the reset.

In one embodiment, the actuation member can be actuated by depressingthe actuation member (like a button in one embodiment), moving it in alongitudinal direction relative to the central shaft toward the secondend of the device. When the lock ring is in a locked position, theactuation member is inactive (i.e., cannot be actuated), in anembodiment. The system further includes a resetting member. Theresetting member includes a base and an elongated portion, wherein theelongated portion is configured to associate with a second end of themedicament device to initiate movement of the central shaft ring toactuate the system and initiate the resetting of the device. The methodfurther comprises inserting the elongated portion of the resettingmember into the second end of the medicament device, such that thelocking mechanism is reset, the actuation member is reset and the lockring is rotated to the locked position. Once the lock ring has reachedthe locked position, the user can rotate the lock ring to the unlockedposition, and the actuation member is active (i.e., can be actuated) andmovable relative to the central shaft, in one embodiment, to initiatethe medicament device. In one particular embodiment, the lock ring isrotated 45 degrees from the unlocked position to the locked position(i.e., the same distance as the distance between each raised portion onthe inner surface of the slotted ring and the distance between theprongs of the pronged ring, in an embodiment). Following reset of thelocking mechanism, the medicament delivery or training device is readyto be used in a subsequent injection or training. Therefore in oneembodiment, to start the next training or injection, the lock ring ismoved by the user from the locked position to the unlocked position.

In another embodiment, a system for resetting a medicament devicelocking mechanism from an unlocked position to a locked position isprovided. The system includes a medicament device housing comprising afirst end and a second end, an actuation member disposed at the firstend of the device a lock ring disposed at the first end of the device,and a resetting element, wherein inserting the resetting element intothe second end of the device resets the actuation member and rotates thelock ring from the unlocked position to the locked position.

Turning to the drawings, FIG. 1A provides a side view of an embodimentof the locking reset system 100 including the actuation member 6 at afirst end of the medicament device, a spring clamp 5, a spring 4, apronged ring 3, a slotted ring 2, and a central shaft ring 1 a disposedalong a central shaft 1. Lock ring 7 is shown in dashed line, as lockring 7 surrounds a portion of the first end of the device. FIG. 1Afurther illustrates the resetting member 25 for insertion within asecond end of the medicament device to initiate reset of the lockingreset system 100. Insertion of the elongated portion of the resettingmember 25 into the second end of the medicament device produces a forcewhich initiates the resetting of the locking reset system 100 such thata central shaft ring 1 a moves slotted ring 2 toward the first end ofthe medicament device, which moves the pronged ring 3, initiating aseries of events of the resetting system 100 that follow, as describedin greater detail in reference to FIG. 9.

FIG. 1B provides an exploded view of various components of the system100 shown in FIG. 1A for resetting the medicament device lockingmechanism. A central shaft 1 with a central shaft ring 1 a, a first hook11 a, a second hook 11 b, and a third hook 11 c disposed thereon. Aslotted ring 2 is shown, including eight guiding channels 21 (only threeof which are shown) and raised portions 22 disposed there between,wherein the guiding channels 21 are spaced apart by 45° on an innerportion of the slotted ring. A pronged ring 3 is shown including prongs3 a. A spring 4, which combines torsion and compression force isprovided, has a first end 4 a and a second end 4 b. A spring clamp 5configured to attach to the second end 4 b of the spring 4 to preventmovement of the second end 4 b of the spring 4 is also illustrated. Anembodiment of an actuation member 6 is shown, wherein the actuationmember 6 which can slide in a longitudinal direction relative to thecentral shaft 1, and wherein the actuation member 6 is configured toattach onto the system 100. Actuation of the actuation member 6 isprevented if lock ring 7 (shown in FIGS. 7 and 8 only) is in a lockedposition, in an embodiment as will be shown below. Lock ring 7 rotatesin conjunction with spring clamp 5. As will be seen in the Figuresbelow, lock ring includes at least one spine 71, which interacts with atleast one notch 32A on the pronged ring 3 (shown in FIG. 7).

FIG. 2 provides a perspective view of an end portion of the device withall components of the system 100, except for the lock ring 7, assembled.The first end 4 a of the spring 4 is attached to the pronged ring 3, andthe second end 4 b of the spring 4 is held in place by the spring clamp5. Spring clamp members 5 a, 5 b, are disposed on either side of thesecond hook 11 a of the central shaft 1 and keep spring clamp 5 in placeon the central shaft 1.

FIG. 3 provides a partial perspective view of the first end of themedicament device providing a view of the central shaft ring 1 a and theslotted ring 2 surrounding a portion of the central shaft 1. The slottedring 2 can rotate relative to central shaft 1 in an embodiment. In FIG.3, the spring 4, spring clamp 5, and actuation member 6 are not shown.Shown on central shaft 1 are first, second and third hooks 11 a, 11 band 11 c. FIG. 4 provides a perspective view of the system 100 as shownin FIG. 3, however, the pronged ring 3 having prongs 31 and notches 32is shown as surrounding the central shaft 1, wherein the pronged ring 3is prevented from moving in a longitudinal direction relative to thecentral shaft 1 toward the slotted ring 2 by the first hook 11 a whichis in contact with ridge 34 of pronged ring 3 (as shown in FIG. 6). Theprong 31 on pronged ring 3 slides into the guiding channels 21 ofslotted ring 2. Pronged ring 3 can be disengaged from slotted ring 2 bysliding in a longitudinal direction toward the first end of the centralshaft 1. This movement can be initiated with the resetting member. Thenpronged ring 2 can rotate 45° in one specific, non-limiting embodiment,(the degrees of rotation may vary in different embodiments of theinvention, this 45° number is used as an example herein), and bere-engaged by sliding its prong 31 into the guiding channels 21 ofslotted ring 2. Once pronged ring 3 is engaged with slotted ring 2, itcannot rotate under the torsion force of spring 4.

FIG. 5 provides a partial perspective view of the first end of thedevice of the system 100. As spring 4 is held in place by spring clamp5, pronged ring 3 is subject to torsion and compression force, forcing aprong 31 of pronged ring 3 to slide into guiding channel 21 of theslotted ring 2. FIG. 6 provides a perspective view of pronged ring 3,which has two holes or openings 33 and two notches 32 in a non-limitingembodiment.

FIG. 7 provides a cross-sectional perspective view of lock ring 7 in thelocked position. Two spines 71 on lock ring 7 interact with the twocomplementary notches 32 on pronged ring 3 in the non-limiting,exemplary embodiment of the system 100 shown in FIG. 7, preventing axialrotation of pronged ring 3 relative to lock ring 7 when they are joinedto one another as shown.

In FIG. 8, a perspective view of the first end of the device showing thesystem 100 showing the unlocking movement. Use of the medicament devicerequires the rotation of lock ring 7 from the locked position to theunlocked position by the user, this loads the torsion spring 4. Theactuation member 6 can then be actuated in order to use the medicamentdevice. Once the device has been used (i.e., an injection has beencompleted, in one embodiment), the lock ring 7 remains in the unlockedposition. Prior to using the device for a subsequent injection event,the lock ring 7 must be reset to the locked position and the actuationmember must be reset. In order to begin the reset of the lock ring 7,the resetting member 25 is inserted into the second end of themedicament device which effects the movement of the central shaft ring 1a, the slotted ring 2 and the pronged ring 3 as described below in orderto reset the lock ring 7 from unlocked position back to a lockedposition and to reset the actuation member 6 so that it can bere-actuated for a subsequent injection. Then, as spine 71 is engaged innotch 32, lock ring 7 turns pronged ring 3 counterclockwise 45-degrees(in a non-limiting example). As pronged ring 3 is engaged with slottedring 2, the slotted ring 2 also rotates counterclockwise 45-degrees inthe non-limiting embodiment shown. Since guiding channels 21 aredistributed every 45-degrees between central shaft 1 and the slottedring 2 in the embodiment provided, it turns slotted ring 2 after45-degree counterclockwise rotation in one embodiment. As pronged ring 3cannot reset itself under torsion force of spring 4, the whole mechanismstays unlocked. Rotating lock ring 7 from the locked position to theunlocked position rotates slotted ring 2 and pronged ring 3 relative tocentral shaft 1 while loading the torsion spring 4.

FIG. 9 provides a perspective view of the first end of the devicedemonstrating the first step of the reset. Pronged ring 3 is pushedtoward the first end of the central shaft 1 (and separated from theslotted ring 2) by inserting the resetting member 25 which forces thecentral shaft ring 1 a toward the first end of the device, moving theslotted ring 2 and pronged ring 3 toward the first end. The movementforces pronged ring 3 to detach from the slotted ring 2 and move towardthe first end of the central shaft 1 by moving the central shaft ring 1a toward the first end of the central shaft 1. In one particularembodiment, movement of the central shaft ring 1 a toward the first endforces the slotted ring 2 with raised portions 22 on the inner portionthereof toward the first end over the first hook 11 a, wherein at leastone of the raised portions 22 of the slotted ring 2 compresses the firsthook 11 a. Slotted ring 2 and pronged ring 3 disengage from one anotheras pronged ring 3 moves along the longitudinal axis of the central shaft1 toward the first end of the central shaft 1 until first hook 11 acomes through an opening in pronged ring 32 and abuts ridge 34preventing pronged ring 3 from moving back toward slotted ring 2.

After the first reset step is complete, slotted ring 2 and pronged ring3 stay disengaged as shown in FIG. 9 because the first hook 11 a on thecentral shaft 1 prevents pronged ring 3 from moving back toward slottedring 2, as described. Pronged ring 3 then rotates clockwise. Therotation of pronged ring 2 is 45-degrees in one embodiment, under thetorsional force of spring 4, such that first hook 11 a is disposedwithin opening 33 a in pronged ring 3, and the lock ring 7 is reset(i.e. rotated) from the unlocked position to the locked position (shownin FIG. 7). This rotation of the locked ring 7 is as a result of theinteraction between the spine(s) 71 of lock ring 7 and the notch(es) 32Aand/or 32B of pronged ring 3, wherein the spine(s) 71 fit within thecomplementary notch(es) 32A, 32B of the pronged ring 3, such that thepronged ring 3 and the lock ring 7 rotate together about the centralshaft 1.

FIGS. 11A and 11B provide a side view of the system and a close up viewof the side view of the system showing the pronged ring 3 during a thirdstep of the reset. After the second reset step is complete, pronged ring3 and lock ring 7 (not shown) complete the reset process. After prongedring 3 rotates clockwise under the torsion force of spring 4, and oncethe first hook 11 a of the central shaft 1 aligns with the hole oropening 33 on pronged ring 3, the compression force of spring 4 movespronged ring 3 back toward slotted ring 2 where prong(s) 31 re-engagewith slotted ring guide channel(s) 21 in order to complete the reset ofthe locking mechanism. Consequently, the system resets the actuationmember 6 and resets the lock ring 7 from the unlocked position to thelocked position such that the device can be use for a subsequentinjection or training event.

What is claimed is:
 1. A system for resetting a medicament devicelocking mechanism from an unlocked position to a locked position, saidsystem comprising: a medicament device housing comprising a centralshaft, said central shaft comprising at least a first hook at a firstend thereof; a central shaft ring slidably engaged with the centralshaft and movable along a longitudinal axis of the central shaft; aslotted ring slidably engaged with the central shaft and associated withthe central shaft ring, said slotted ring comprising at least oneguiding channel along its inner surface, said at least one guidingchannel formed between at least two raised portions on an inner surfaceof the slotted ring; a pronged ring slidably engaged with the centralshaft and movable along the longitudinal axis of the central shaft, saidpronged ring comprising at least one prong, said at least one prongslidably engaged within a guiding channel of the slotted ring, saidpronged ring comprising one or more openings, one or more ridge portionsadjacent to said one or more openings, and one or more notches aroundits circumference; a spring associated with the pronged ring at a firstend of the spring, said spring associated with a spring clamp at asecond end of the spring, wherein said spring is arranged to exert atorque upon the pronged ring; and a lock ring surrounding at least aportion of the first end of the housing, said lock ring comprising oneor more spines projecting inwardly, said one or more spines configuredto interface with the one or more notches of the pronged ring, the lockring comprising a locked position and an unlocked position; wherein uponactuation of the system, the central shaft ring is moved in alongitudinal direction toward the first end of the central shaft,forcing the slotted ring toward the first end of the central shaft suchthat at least one of the raised portions of the slotted ring depressesthe first hook of the central shaft, and the pronged ring is disengagedfrom the slotted ring such that the first hook engages the ridge portionof the pronged ring; wherein a torsional force from the spring rotatesthe pronged ring axially relative to the central shaft, rotating thelock ring from the unlocked position to the locked position and rotatingthe pronged ring such that at least the first hook aligns with anopening of the pronged ring, wherein compression force from the springforces the at least one prong of the pronged ring to re-engage with theguide channel of the slotted ring to complete the reset of the systemfrom the unlocked position to the locked position.
 2. The system ofclaim 1 further comprising an actuation member associated with the firstend of the central shaft, and configured to activate the medicamentdevice upon actuation, wherein said actuation member is actuated bypressing down on the actuation member such that it moves in alongitudinal direction relative to the central shaft toward the secondend of the device.
 3. The system of claim 2, wherein when the lock ringis in the locked position, the actuation member cannot move in alongitudinal direction relative to the central shaft toward the secondend of the device.
 4. The system of claim 2, wherein when the lock ringis in the unlocked position, the actuation member is movable in alongitudinal direction relative to the central shaft toward the secondend of the device.
 5. The system of claim 1, wherein the medicamentdevice is a training device for an auto-injector.
 6. The system of claim1, wherein the medicament device is an auto-injector.
 7. The system ofclaim 1, further comprising at least a second hook disposed on thecentral shaft, wherein the second hook interacts with the spring clampto prevent the spring clamp from moving along the longitudinal axis ofthe central shaft toward the first end of the central shaft and/or fromrotating relative to the central shaft.
 8. The system of claim 2,wherein the actuation member is reset to a pre-actuated position uponresetting of the locking mechanism.
 9. The system of claim 1, whereinthe slotted ring further comprises two or more guiding channels alongits inner surface.
 10. The system of claim 9, wherein the two or moreguiding channels are disposed at 45 degree increments on the innersurface of the slotted ring.
 11. The system of claim 1, wherein prior toreset of the system, the lock ring is rotatable from the lock positionto the unlock position such that the actuation member can be activated.12. The system of claim 1, further comprising a resetting member,wherein the resetting member comprises a base and an elongated portion,wherein the elongated portion is configured to associate with a secondend of the medicament device to initiate movement of the central shaftring to actuate the system and initiate the resetting of the device. 13.A method for resetting a medicament device locking mechanism from anunlocked position to a locked position comprising a resetting system,the system comprising (a) a medicament device housing comprising acentral shaft having at least a first hook at a first end thereof, (b) acentral shaft ring slidably engaged with the central shaft and movablealong a longitudinal axis of the central shaft, (c) a slotted ring, saidslotted ring being slidably engaged with the central shaft andassociated with the central shaft ring, said slotted ring comprising atleast one guiding channel along its inner surface, said at least oneguiding channel being formed between at least two raised portions on aninner surface of the slotted ring, (d) a pronged ring slidably engagedwith and rotatable about the central shaft and movable along thelongitudinal axis of the central shaft, said pronged ring comprising atleast one prong, said at least one prong slidably engaged within aguiding channel of the slotted ring, said pronged ring comprising one ormore openings, one or more ridge portions adjacent to said one or moreopenings, and one or more notches around its outer circumference, (e) aspring associated with the pronged ring at a first end of the spring,said spring associated with a spring clamp at a second end of thespring, wherein said spring is arranged to exert a torque upon thepronged ring, (f) a lock ring surrounding at least a portion of thefirst end of the housing, said lock ring comprising one or more spinesprojecting inwardly, said one or more spines configured to interfacewith the one or more notches of the pronged ring, the lock ringcomprising a locked position and an unlocked position, (g) an actuationmember configured to activate the medicament device upon actuation,wherein said actuation member can be actuated when the lock ring is inthe locked position; and (h) a resetting member, the resetting membercomprising a base and an elongated portion, wherein the elongatedportion is configured to associate with a second end of the medicamentdevice to initiate movement of the central shaft ring to actuate thesystem and initiate the resetting of the device; wherein the methodcomprises inserting the elongated portion of the resetting member intothe second end of the medicament device, such that the locking mechanismis reset, the lock ring is rotated to the locked position, and theactuation member is active and movable relative to the central shaft toinitiate the medicament device.
 14. The method of claim 13 wherein thelock ring is rotated 45 degrees from the unlocked position to the lockedposition.
 15. The method of claim 13 wherein rotating the lock ring fromthe locked position to the unlocked position applies a torsional forceto load the spring.
 16. The method of claim 15, wherein the resettingmember releases the pronged ring from the slotted ring and unloads thetorsional force of the spring, rotating the pronged ring about thecentral shaft.
 17. The method of claim 16, wherein movement of thepronged ring toward the first end of the central shaft loads thecompression force of the spring.
 18. The method of claim 17, whereinafter the pronged ring is rotated about the central shaft such that thefirst hook of the central shaft is disposed in the pronged ring opening,the compression force of the spring causes the pronged ring to movetoward the slotted ring to complete the reset.
 19. A system forresetting a medicament device locking mechanism from an unlockedposition to a locked position, said system comprising: a medicamentdevice housing comprising a first end and a second end; an actuationmember disposed at the first end of the device; a lock ring disposed atthe first end of the device; and a resetting member, wherein insertingthe resetting member into the second end of the device resets theactuation member and rotates the lock ring from the unlocked position tothe locked position.
 20. The system of claim 19 further comprising atorsion spring, wherein rotation of the lock ring from the unlockedposition to the locked position loads the torsion spring.